Perhaps you should try some spelling variations:
"gian quanh ca snippets" » "gian quang ca snippets", "gian thanh ca snippets", "giac quan ca snippets", "gian quanh cac snippets", "gian quang cao snippets", "gian quang cua snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("gian quanh ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian quanh ca snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian quanh ca snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian quanh ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.